Twin coils for ice coolers



Feb. 21, 1928.

M. STEIN ET AL TWIN COILS FOR ICE COOLERS Filed March 51. 1927 ----:3.: llllllluilunM ENTORS J NV M BY V v ATTORNES Patented Feb. 21, 1928.

umrso STATES PATENT OFFICE.

'rwm COILS son. ICE COOLEBS.

Application filed Hal-ch 31, 1927. Serial No. 179,887.

It has been the practice heretofore to employa single cooler coil, the bends or convolutions of which were arranged in a single horizontal plane, resting on the bottom of the cooler chamber or ice box, in which construction said convolutions were liable to be damaged by the impact of alarge cake of ice dropping thereon; It has also been proposed to emplo a coil having resilient convolutions graduated in height, the lowermost of which rested on the bottom of the cooler chamber, while the uppermost thereof served resiliently to support the cake of ice, thus to obviate any damage to said coil by the weight or impact of the cake of ice in case it slipped during the placing thereof on the upper coil. This necessarily restricts the ice space because of the height of the bends or convolutions exposed to the refrigerating medium, since the helically arranged, separated convolutions occupied a. relatively large amount of space within the cooler chamber thereby resulting in a corresponding decrease in space available for ice and necessitating the frequent replenishing of the same.

The ob'ect of our invention is to overcome the disa vantages of the prior constructions by providing novel twin coils compact- 1y arranged, whereby of bends or convolutions is employed, thereby affording maximum contact with the cooling medium.

Our invention relates to a new and useful twin coil construction for water coolers of the type employing a cooling coil wherein the water to be cooled flows from acity main or other point of supply to the point of use, said coils supporting the cake of ice, and the construction being such that both of said twin coils are at all times submerged in the ice water so that a maximum cooling efi'ect is attained.

To the above ends, our invention consists of twin upper and lower coils, the outer end of the lower coil being connected to a water inlet, while the outer end of the upper coil is connected to a spigot, and a coupling member suitably connecting the juxtaposed inner ends of the lower and upper coils to each other, said upper and lower coils being compactl arranged in only two'horizontal planes w ich are at all times submerged in the ice water, thus providing a maximum .surface contact with the refrigerating medium and occupying a minimum amount of a maximum number space in the lower portion of the cooler,so that maximum space for ice is provided above the upper of the twin coils.

For the purpose of illustrating our invention, we have shown. in the accompanying drawings, aform thereof which is at present preferred by us, since it will give in practice, satisfactory and reliable results, although it is to be understood that the various instrumentalities of which our invention consists'may be variously arranged and organized and that our invention is not limited to the precise arrangement and organization of these instrumentalities as herein shown and described. In the accompanying drawings Figure 1 represents a perspective view of Figure 2 represents a side elevation of the twin cooler coils seen in Figure 1.

Figure 3 represents a. plan view of the upper cooler coil and its connecting .coupling.

Figure 4 represents a plan view of the lower cooler coil.

Figure 5 is a sectional view of the coupl Referring to the drawings, in which like reference characters indicate like parts, 1 designates an upper cooling coil havlng the exit or outlet branch 2, which leads through the wall of the cooler 4 to the spigot 5. The "coil 1 as seen inFigures 1 and 3 is composed of three convolutions, but obviously, the number of convolutions can posed of three or more convolutions and is provided with the inlet 13, which co'mmuni cates with the Water inlet pipe 14 by a suitable elbow 15. The two coils 1 and 12 are substantially duplicates of each other and when they are assembled and coupled to gether by the coupling 17 said coils will be very compactly arranged in two horizontal planes and will appear as in Flgures 1 and 2 and the incoming water which enters the upper coil 1, so that both coils will al ways be at all times submerged in ice water, the cake of ice being supported on the upper coil 1. By the employment. of the upper and lower twin coils as seen in Figures 3 and 4 in conjunction with the coupling 7,

it will be apparent that we are enabled to position said upper and lower coils very closely together and we are further enabled by our novel construction to have both said coils at all times submerged in ice water and said coils are further, when assembled, very compactly arranged and positioned near the bottom of the cooler 4, so that there is a maximum space provided above the upper coil 1 for the reception of a maximum amount of-ice. The cooler in practice is rovided with the top 19 having an openmg therein, for the insertion of the cake of "ice and it is supported on legsQO. In placing the ice in the cooler, the ice is intro-' duced through the top thereof and deposited on the. upper coil 1, which is of such area, that all the convolutions or bends thereof in the same horizontal plane are subjected to the cooling eflect of the ice and as the latter'melts, the cooled water accumulates untilit is slightly above the top of the upper coil, 1 so that both coils are at all times submerged in ice water, any excess water being drained off through the siphon 16.

By the employment of the coupling 7, having the downwardly inclined portion 9, we are enabled to couple the juxtaposed ends 6 and 11 together so as to position the two coils 1 and 12 in two horizontal planes very close to each other in proximity to the bottom of the cooler, which not only affords a maximumice space, but permits the entire portion of the two horizontal coils t6 be at'all'times submerged in ice water as is evident. The two coils having been positioned in the cooler with the juxtaposed ends 6 and 11 in proximity, the coupling 7 is placed in position and then soldered or,

brazed in any suitable manner.

It will now be apparent that we have devised a new and useful twin coil for ice coolers which embodies the features of advantage enumerated as desirable in the statement of the invention and the above description and while we have in the present instance, shown and described an embodiment thereof which is at present preferred by us since it will v lower coil having its convolutions in a horizontal plane and horizontally disposed in said ice box and having its outer end connected to said water'inlet and its inner end terminating within the coil, an. upper coil superimposed on said lower coil and having its convolutions in a horizontal plane and having its outer end connected to said Water outlet and its inner end juxtaposed to the inner end of said lower coil and means connecting the inner ends of said upper and lower coils, comprising a coupling disposed within said coils and having two'terminal portions horizontally disposed in different planes and joined by an inclined portion, said terminal portions being secured to said inner end-siof said coils, thereby enabling said coils to occupy two horizontal planes in close proximity to each other. I

2. A water cooler, comprising an ice box having a water inlet and a water outlet, a

lower coil horizontally disposed in a horizontal plane in said ice box and having'its' outer end connected to said water inlet, an

upper coil superimposed onsaid lower coil in a horizontal plane and having its outer end connected to said water outlet, the inner ends of said coilsbeing in alignment but at different levels, means connecting the, inner ends of said upper and lower coils, comand a waste outlet in said ice box, both of 7 said upper and lower coils bein dis osed in horizontal planes below the in et 0 .said

waste outlet.

MORRIS STEIN. ABRAHAM SgLEVIN.

,prising a coupling disposed within said coils 

